
<template>
<!-- 页面主体 -->
  <el-container class="container_Home">
    <!-- 头部区域 -->
  <el-header>
    <div>
      <img src="../assets/heima.png" alt="">
      <span>电商后台管理系统 </span>
    </div>
     <el-button type="info" @click="loginout">退出</el-button>
  </el-header>
  <el-container>
    <!-- 左侧导航栏 -->
    <el-aside :width="isCollapse?'64px':'200px'">
      <div class="toggle-button" @click="toggleCollapse" >|||</div>

 <el-menu
      :default-active="avticepath" background-color="#333744" text-color="#fff"  active-text-color="#409bff" unique-opened :collapse="isCollapse" :collapse-transition="false" router >
      <!-- 一级菜单 -->
      <el-submenu :index="item.id +''" v-for="item in menulist" :key="item.id">
        <!-- 一级菜单模板区域 -->
        <template slot="title">
          <!-- 字体图标区域 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本区域 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单区域 -->

            <el-menu-item :index="'/'+busItem.path" v-for="busItem in item.children" :key="busItem.id" @click="saveNavState('/'+busItem.path)">
       <!-- 二级菜单模板区域 -->
        <template slot="title">
          <!-- 二级字体图标区域 -->
          <i class="el-icon-menu"></i>
          <!-- 二级文本区域 -->
          <span>{{busItem.authName}}</span>
        </template>

            </el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
    <!-- 右侧内容区域 -->
    <el-main>
      <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>
<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      isCollapse: false,
      avticepath: ''

    }
  },
  created() {
    this.getMenuList()
    this.avticepath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    loginout() {
      // 实现退出,只需要清除token
      window.sessionStorage.clear()
      // 编程式导航路由重定向,点击退出跳转到登录页面
      this.$router.push('/login')
    },
    // 获取所有的菜单
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      console.log(res)

      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
    },
    // 点击按钮切换菜单
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    saveNavState(avticepath) {
      window.sessionStorage.setItem('activePath', avticepath)
      this.avticepath = avticepath
    }
  }
}
</script>
<style lang="less" scoped>
// 在vue中引入了scoped这个概念，scoped的设计思想就是让当前组件的样式不会修改到其它地方的样式
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0px;
  align-items: center;
  color: #fff;
  font-size: 20px;
     > div {
    display: flex;
    align-items: center;
    > span {
      padding-left: 20px;
    }
    }
}
.el-aside {
  background-color: #333744;
  .el-menu{
    border-right:none ;
  }
}
.el-main {
  background-color: #eaedf1;
}
.container_Home {
  height: 100%;
}
.iconfont {
  margin-right:10px
}
.toggle-button {
  background-color: #4a5064;
  font-size:10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
